java 将文件流和文件名称转换为文件

private class MultipartFileResource extends InputStreamResource {

private String fileName;

private InputStream inputStream;

public MultipartFileResource(InputStream inputStream, String fileName) {

super(inputStream);

this.inputStream = inputStream;

this.fileName = fileName;

}

@Override

public String getFilename() {

return this.fileName;

}

@Override

public long contentLength() throws IOException {

return inputStream.available();

}

@Override

public boolean equals(Object obj) {

return (obj == this || (obj instanceof MultipartFileResource && ((MultipartFileResource) obj).inputStream.equals(this.inputStream)));

}

}

调用方法：

List<MultipartFile> files

for (MultipartFile file : files) {

map.add("file", new MultipartFileResource(file.getInputStream(), file.getOriginalFilename()));

}